digififan 様
早速のご返信ありがとうございます。
apu2は内部にusb2.0のピンがあり,そこからアダプターでusbAに変換し,
dacを接続,認識しています。
背面のusb3.0で認識していたか,記憶が定かでありません。
というのは,usb2.0のほうが音質的に有利だとの思いこみから,
わざわざ内部から取り出した記憶があります。
(認識しなかったので,内部からusb2.0を取り出したのかもしれません。)
今,apu2のusb3.0で確認すればいいのですが,LIVA Z の電源(バッテリー)を19Vのまま,
12vに変えることなくapu2に接続してしまったので,焦げ臭い臭いがして昇天してしまいました。(涙)
ご指示の手順に従ってコマンドを実行しましたが,その出力内容を貼り付けます。
よろしくご教示ください。
lightmpd login: root
Password:
# dmesg | tail -50
[ 7.261532] 003: Run /sbin/init as init process
[ 7.427501] 000: FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 7.832009] 003: random: fast init done
[ 7.920794] 000: r8169 0000:01:00.0: Direct firmware load for rtl_nic/rtl8168 h-2.fw failed with error -2
[ 7.920804] 000: r8169 0000:01:00.0 eth0: unable to load firmware patch rtl_nic/rtl8168h-2.fw (-2)
[ 7.920969] 000: Generic Realtek PHY r8169-100:00: attached PHY driver [Generic Realtek PHY]
(mii_bus:phy_addr=r8169-100:00, irq=IGNORE)
[ 8.059355] 003: r8169 0000:01:00.0 eth0: Link is Down
[ 9.644045] 000: r8169 0000:01:00.0 eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 109.188213] 003: usb 1-4: new high-speed USB device number 3 using xhci_hcd
[ 109.398478] 003: usb 1-4: New USB device found, idVendor=0451, idProduct=8027, bcdDevice= 1.10
[ 109.398483] 003: usb 1-4: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 109.398485] 003: usb 1-4: SerialNumber: 2D0308613CA2
[ 109.399050] 003: hub 1-4:1.0: USB hub found
[ 109.399077] 003: hub 1-4:1.0: 2 ports detected
[ 109.748211] 003: usb 1-4.1: new high-speed USB device number 4 using xhci_hcd
[ 109.908478] 003: usb 1-4.1: New USB device found, idVendor=0451, idProduct=8027, bcdDevice= 1.10
[ 109.908482] 003: usb 1-4.1: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 109.908485] 003: usb 1-4.1: SerialNumber: 1D0308613CA2
[ 109.909002] 003: hub 1-4.1:1.0: USB hub found
[ 109.909029] 003: hub 1-4.1:1.0: 2 ports detected
[ 110.268211] 003: usb 1-4.1.1: new high-speed USB device number 5 using xhci_hcd
[ 110.419778] 003: usb 1-4.1.1: New USB device found, idVendor=2109, idProduct=8112, bcdDevice=91.00
[ 110.419782] 003: usb 1-4.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 110.419785] 003: usb 1-4.1.1: Product: USB2.0 Hub
[ 110.419787] 003: usb 1-4.1.1: Manufacturer: VIA Labs, Inc.
[ 110.420622] 003: hub 1-4.1.1:1.0: USB hub found
[ 110.420756] 003: hub 1-4.1.1:1.0: 2 ports detected
[ 110.758212] 003: usb 1-4.1.1.1: new high-speed USB device number 6 using xhci_hcd
[ 110.909746] 003: usb 1-4.1.1.1: New USB device found, idVendor=2109, idProduct=8112, bcdDevice=91.00
[ 110.909750] 003: usb 1-4.1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 110.909752] 003: usb 1-4.1.1.1: Product: USB2.0 Hub
[ 110.909755] 003: usb 1-4.1.1.1: Manufacturer: VIA Labs, Inc.
[ 110.910641] 003: hub 1-4.1.1.1:1.0: USB hub found
[ 110.910777] 003: hub 1-4.1.1.1:1.0: 2 ports detected
[ 111.258211] 003: usb 1-4.1.1.1.1: new full-speed USB device number 7 using xhci_hcd
[ 111.378229] 003: usb 1-4.1.1.1.1: device descriptor read/64, error -32
[ 111.618228] 003: usb 1-4.1.1.1.1: device descriptor read/64, error -32
[ 111.848211] 003: usb 1-4.1.1.1.1: new full-speed USB device number 8 using xhci_hcd
[ 111.968228] 003: usb 1-4.1.1.1.1: device descriptor read/64, error -32
[ 112.208227] 003: usb 1-4.1.1.1.1: device descriptor read/64, error -32
[ 112.338412] 003: usb 1-4.1.1.1-port1: attempt power cycle
[ 113.048211] 003: usb 1-4.1.1.1.1: new full-speed USB device number 9 using xhci_hcd
[ 113.048325] 003: usb 1-4.1.1.1.1: Device not responding to setup address.
[ 113.268321] 003: usb 1-4.1.1.1.1: Device not responding to setup address.
[ 113.488211] 003: usb 1-4.1.1.1.1: device not accepting address 9, error -71
[ 113.608208] 003: usb 1-4.1.1.1.1: new full-speed USB device number 10 using xhci_hcd
[ 113.608323] 003: usb 1-4.1.1.1.1: Device not responding to setup address.
[ 113.828321] 003: usb 1-4.1.1.1.1: Device not responding to setup address.
[ 114.048210] 003: usb 1-4.1.1.1.1: device not accepting address 10, error -71
[ 114.048459] 003: usb 1-4.1.1.1-port1: unable to enumerate USB device
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